The Astron Explorer is a skill level 4 model that you’ll want to add to your collection of Estes rockets. Using the same laws of physics that have launched man to the moon and now NASA’s InSight Lander to Mars, you’ll send your Astron Explorer skyward — to well over 1,000 feet with an Estes E12-4 engine (not included). The Astron Explorer will spur your imagination and test your crafting skills.

The Explorer Aquarius is a skill level 4 kit that features a custom jig for perfect alignment assembly. Launched with an Estes D12-5 engine (not included), the Explorer Aquarius can fly higher than 700 feet! You’ll want to proudly display this show piece when it’s not on the launch pad, so we’ve included a removable plastic display engine nozzle for the complete effect.